Fusion tab of crafting station is disabled

The Fusion tab of the crafting station is disabled for me. I can't access the fusion functionality. I've asked in game and no one has any idea. I guess my account is broken somehow. I tried deleting my alt characters to no avail. My main is Inquisitor Rank 45, Account Rank is 40. Yes I completed the intro story missions.

Thanks, unlocking it in the tech tree worked. However, the wording is confusing. The tech tree states "This upgrade will unlock a new tab to Sanctify relic quality items in your inventory". There is no "Sanctify" tab. The tab is named "Fusion". Perhaps this should be reworded to prevent confusion?